AP brakes jamming on.
Discussion
Sorry for the double post, as a lot of owners are having this problem with AP brakes I thought I better start off a dedicated listing.
I have heard a lot about the AP brakes jamming on, I think this is down to inferior metals used, all done for cheapness when manufactured, a good service done properly on the pistons and caliper and making sure a good quality rubber silicone very high temp grease behind the dust covers would do the trick.
If they are sticking on, you have got to be very carefull that they are not overheating the discs!!! they will definitly warp if they do, easy to check, from cold start (when the car has not been driven for a day or two) do a short 1/4 mile journey without (if possible) using the brakes, use handbrake and engine to slow down, then park up and stick your fingers through spokes of the wheel and feel if disc is hot (be aware that they could be very hot!!!) if it is then the pistons in the calipers are definitly seizing which will warp your discs and ruin the brake pads by baking them.
If anyone is interested to see if this will cure the problem and letting me try the fix, let me know.
I have heard a lot about the AP brakes jamming on, I think this is down to inferior metals used, all done for cheapness when manufactured, a good service done properly on the pistons and caliper and making sure a good quality rubber silicone very high temp grease behind the dust covers would do the trick.
If they are sticking on, you have got to be very carefull that they are not overheating the discs!!! they will definitly warp if they do, easy to check, from cold start (when the car has not been driven for a day or two) do a short 1/4 mile journey without (if possible) using the brakes, use handbrake and engine to slow down, then park up and stick your fingers through spokes of the wheel and feel if disc is hot (be aware that they could be very hot!!!) if it is then the pistons in the calipers are definitly seizing which will warp your discs and ruin the brake pads by baking them.
If anyone is interested to see if this will cure the problem and letting me try the fix, let me know.
Edited by snowwolf on Friday 1st January 18:27
To me it seems the pads are being held onto the discs, try a simple test, next time you stop on your drive, use the handbrake to stop the last metre or so and not the footbrake then see if you have the same problem when you move the car a day or two later.
Edited by snowwolf on Friday 1st January 18:31
Edited by snowwolf on Friday 1st January 18:32
007 VXR said:
ksithumper said:
Don't ever pull on a Monaro handbrake whilst moving. You will cause damage.
why ? what damage can be done ..? i had to do this last month after a big spin because the engine stalled and i had no brakes , going backwards at 70mph .snowwolf said:
007 VXR said:
ksithumper said:
Don't ever pull on a Monaro handbrake whilst moving. You will cause damage.
why ? what damage can be done ..? i had to do this last month after a big spin because the engine stalled and i had no brakes , going backwards at 70mph .
ksithumper said:
Don't ever pull on a Monaro handbrake whilst moving. You will cause damage.
I agree! The handbrake is an "all or nothing" affair, the shoe material can be ripped off the shoes if you apply the handbrake whilst moving. This has been asked loads of times before, someone posted a decent explanation a while back, a search should find it.
As for the sticking APs, mine did it today. 99.9% of the time my car is garaged and I always make sure the brakes are dry before putting it away. But it's been outside under the car port for the last few days. Went to drive it this morning, as I tried to pull away in first gear it was stuck solid! They eventually let go with a bang. It's back in the garage now after a 5 mile drive putting the brakes on and off to clean the discs.
Apparantly the APs discs rust much quicker than normal discs because they have a higher iron content.
No brake shoes would ever delaminate, every car on the road years ago run on brake shoes, infact brakes shoes have more area to adhere to than brake pads, all rally drivers and road racers will use the handbrake all the time.
But one point to add, if your pads or shoes are very worn past their servicable limit, will delaminate, that is a well know fact!!!
But one point to add, if your pads or shoes are very worn past their servicable limit, will delaminate, that is a well know fact!!!
snowwolf said:
No brake shoes would ever delaminate, every car on the road years ago run on brake shoes, infact brakes shoes have more area to adhere to than brake pads, all rally drivers and road racers will use the handbrake all the time.
But one point to add, if your pads or shoes are very worn past their servicable limit, will delaminate, that is a well know fact!!!
Point taken Mick, did use to use drums so just like handbrake shoes...But one point to add, if your pads or shoes are very worn past their servicable limit, will delaminate, that is a well know fact!!!
But it seems they just can't be put away wet as they just stick!
Someone said to me a a meet the spare tyre will not fit with ap-racing brakes fitted!
So i had to try and see if this was right or there would be no point in having the spare in the boot!
Took wheels off front and back and fitted no problem so don't understand why someone said this?
Any way when off could spin discs fine and was solid that morning before trying this, i
five miles to parents place after coming out the garage with them solid and jacked up soon as there and discs was cold, so its just the fact they seem to rust 
dreamtoy said:
snowwolf said:
No brake shoes would ever delaminate, every car on the road years ago run on brake shoes, infact brakes shoes have more area to adhere to than brake pads, all rally drivers and road racers will use the handbrake all the time.
But one point to add, if your pads or shoes are very worn past their servicable limit, will delaminate, that is a well know fact!!!
But one point to add, if your pads or shoes are very worn past their servicable limit, will delaminate, that is a well know fact!!!
Point taken Mick, did use to use drums so just like handbrake shoes...
But it seems they just can't be put away wet as they just stick!
Someone said to me a a meet the spare tyre will not fit with ap-racing brakes fitted!
So i had to try and see if this was right or there would be no point in having the spare in the boot!
Took wheels off front and back and fitted no problem so don't understand why someone said this?
Any way when off could spin discs fine and was solid that morning before trying this, i
five miles to parents place after coming out the garage with them solid and jacked up soon as there and discs was cold, so its just the fact they seem to rust You have a 19" spacesaver which will clear. Its the CV8s with their 18s that have the problem.
dreamtoy said:
snowwolf said:
No brake shoes would ever delaminate, every car on the road years ago run on brake shoes, infact brakes shoes have more area to adhere to than brake pads, all rally drivers and road racers will use the handbrake all the time.
But one point to add, if your pads or shoes are very worn past their servicable limit, will delaminate, that is a well know fact!!!
Point taken Mick, did use to use drums so just like handbrake shoes...But one point to add, if your pads or shoes are very worn past their servicable limit, will delaminate, that is a well know fact!!!
But it seems they just can't be put away wet as they just stick!
Someone said to me a a meet the spare tyre will not fit with ap-racing brakes fitted!
So i had to try and see if this was right or there would be no point in having the spare in the boot!
Took wheels off front and back and fitted no problem so don't understand why someone said this?
Any way when off could spin discs fine and was solid that morning before trying this, i
five miles to parents place after coming out the garage with them solid and jacked up soon as there and discs was cold, so its just the fact they seem to rust Well, I'm well and truly fooked as my car's been stranded on my drive for the last 3 weeks with a screwed BCM. Dealership don't want to look at the car until after New Year. Tried to push it out of the drive today so that I can get a recovery vehicle to it and the AP's have siezed again. With no engine power at all, I have no leaverage.
Edited by DevilYellowCV8 on Friday 1st January 21:08
snowwolf said:
dreamtoy said:
snowwolf said:
No brake shoes would ever delaminate, every car on the road years ago run on brake shoes, infact brakes shoes have more area to adhere to than brake pads, all rally drivers and road racers will use the handbrake all the time.
But one point to add, if your pads or shoes are very worn past their servicable limit, will delaminate, that is a well know fact!!!
Point taken Mick, did use to use drums so just like handbrake shoes...But one point to add, if your pads or shoes are very worn past their servicable limit, will delaminate, that is a well know fact!!!
But it seems they just can't be put away wet as they just stick!
Someone said to me a a meet the spare tyre will not fit with ap-racing brakes fitted!
So i had to try and see if this was right or there would be no point in having the spare in the boot!
Took wheels off front and back and fitted no problem so don't understand why someone said this?
Any way when off could spin discs fine and was solid that morning before trying this, i
five miles to parents place after coming out the garage with them solid and jacked up soon as there and discs was cold, so its just the fact they seem to rust crisisjez said:
dreamtoy said:
snowwolf said:
No brake shoes would ever delaminate, every car on the road years ago run on brake shoes, infact brakes shoes have more area to adhere to than brake pads, all rally drivers and road racers will use the handbrake all the time.
But one point to add, if your pads or shoes are very worn past their servicable limit, will delaminate, that is a well know fact!!!
Point taken Mick, did use to use drums so just like handbrake shoes...But one point to add, if your pads or shoes are very worn past their servicable limit, will delaminate, that is a well know fact!!!
But it seems they just can't be put away wet as they just stick!
Someone said to me a a meet the spare tyre will not fit with ap-racing brakes fitted!
So i had to try and see if this was right or there would be no point in having the spare in the boot!
Took wheels off front and back and fitted no problem so don't understand why someone said this?
Any way when off could spin discs fine and was solid that morning before trying this, i
five miles to parents place after coming out the garage with them solid and jacked up soon as there and discs was cold, so its just the fact they seem to rust 
dreamtoy said:
crisisjez said:
dreamtoy said:
snowwolf said:
No brake shoes would ever delaminate, every car on the road years ago run on brake shoes, infact brakes shoes have more area to adhere to than brake pads, all rally drivers and road racers will use the handbrake all the time.
But one point to add, if your pads or shoes are very worn past their servicable limit, will delaminate, that is a well know fact!!!
Point taken Mick, did use to use drums so just like handbrake shoes...But one point to add, if your pads or shoes are very worn past their servicable limit, will delaminate, that is a well know fact!!!
But it seems they just can't be put away wet as they just stick!
Someone said to me a a meet the spare tyre will not fit with ap-racing brakes fitted!
So i had to try and see if this was right or there would be no point in having the spare in the boot!
Took wheels off front and back and fitted no problem so don't understand why someone said this?
Any way when off could spin discs fine and was solid that morning before trying this, i
five miles to parents place after coming out the garage with them solid and jacked up soon as there and discs was cold, so its just the fact they seem to rust Porsches suffer really badly from rusty brake discs. After washing, they recommend a drive to dry off the discs before putting the car away. Rain isn't usually a problem, as the brakes are usually warm enough after a drive to dry quickly.
I'd also consider leaving it in gear with the handbrake off during the week.
I'd also consider leaving it in gear with the handbrake off during the week.
Edited by ARAF on Friday 1st January 21:31
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